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Power in mechanical systems is the combination of forces and movement. In particular, power is the product of a force on an object and the object's velocity, or the product of a torque on a shaft and the shaft's angular velocity. Mechanical power is also described as the time derivative of work.
Learn what power is, how to calculate it, and how it relates to work and energy. Explore the concept of power with examples of machines, people, and electric devices.
Learn about power, the rate of doing work, and its formula, unit, and examples. Find out how to calculate average power and the difference between instantaneous and average power.
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Learn what power is, how to measure it, and how to calculate it using different units and formulas. Explore the range of power values from ergs to quasars, and the history and applications of power in physics and engineering.
Power (w)Device, Event, Phenomenon, Process101 erg/second10human, sounds produced during normal ...0.2931 Btu/hour11 watt, 1 joule/secondLearn what power is, how to calculate it from work and energy, and how to apply it to various situations. Explore examples of power consumption, energy resources, and efficiency in this chapter of College Physics 1e textbook.
The Work–Energy Theorem. In physics, the term work has a very specific definition. Work is application of force, f f, to move an object over a distance, d, in the direction that the force is applied. Work, W, is described by the equation
6 days ago · Power is the rate of doing work or delivering energy, measured in units such as watts or horsepower. Learn how power is related to force, speed, torque, and energy, and see examples of different forms of power.
